/* Material Design Components */

/* Header Styles */
.app-header {
    background: var(--surface, #ffffff);
    border-bottom: 1px solid var(--outline-variant, #e0e0e0);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.header-logo .logo-link {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: var(--on-surface, #1c1b1f);
    font-weight: 500;
    font-size: 1.25rem;
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-text {
    color: var(--primary, #1976d2);
    margin: 0;
}

.header-nav .nav-list {
    display: flex;
    align-items: center;
    gap: 8px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    text-decoration: none;
    color: var(--on-surface-variant, #49454f);
    border-radius: 20px;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.nav-link:hover {
    background: rgba(25, 118, 210, 0.08);
    color: var(--primary, #1976d2);
}

.nav-link i {
    font-size: 1.125rem;
}

.auth-buttons {
    display: flex;
    align-items: center;
    gap: 8px;
}

.btn--small {
    padding: 8px 16px;
    font-size: 0.875rem;
}

.btn--outline {
    background: transparent;
    color: var(--primary, #1976d2);
    border: 1px solid var(--primary, #1976d2);
}

.btn--outline:hover {
    background: var(--primary, #1976d2);
    color: white;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger-line {
    width: 24px;
    height: 2px;
    background: var(--on-surface, #1c1b1f);
    margin: 2px 0;
    transition: 0.3s;
}

.mobile-menu {
    display: none;
    background: var(--surface, #ffffff);
    border-top: 1px solid var(--outline-variant, #e0e0e0);
    padding: 16px;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    text-decoration: none;
    color: var(--on-surface, #1c1b1f);
    border-bottom: 1px solid var(--outline-variant, #e0e0e0);
}

/* Footer Styles */
.app-footer {
    background: var(--surface-variant, #f5f5f5);
    margin-top: auto;
    border-top: 1px solid var(--outline-variant, #e0e0e0);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 48px 24px 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 32px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.footer-title {
    font-size: 1rem;
    font-weight: 500;
    color: var(--on-surface, #1c1b1f);
    margin: 0 0 16px 0;
}

.footer-links {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-links li {
    margin-bottom: 8px;
}

.footer-links a {
    color: var(--on-surface-variant, #49454f);
    text-decoration: none;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--primary, #1976d2);
}

.footer-bottom {
    border-top: 1px solid var(--outline-variant, #e0e0e0);
    padding-top: 24px;
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.footer-copyright {
    color: var(--on-surface-variant, #49454f);
    font-size: 0.875rem;
    margin: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-nav {
        display: none;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu.active {
        display: block;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    
    .footer-bottom-content {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* Logo Component */
.logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    color: var(--on-surface);
    font-weight: var(--font-semibold);
    font-size: var(--text-lg);
}

.logo__icon {
    font-size: var(--text-2xl);
}

.logo:hover {
    color: var(--primary);
    text-decoration: none;
}

/* Button Component */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    font-family: var(--font-family);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1;
    border-radius: var(--radius-full);
    border: none;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

/* Button Variants */
.btn--primary {
    background-color: var(--primary);
    color: var(--on-primary);
    box-shadow: var(--elevation-1);
}

.btn--primary:hover:not(:disabled) {
    background-color: #0D47A1;
    box-shadow: var(--elevation-2);
    transform: translateY(-1px);
}

.btn--secondary {
    background-color: var(--secondary);
    color: var(--on-secondary);
    box-shadow: var(--elevation-1);
}

.btn--secondary:hover:not(:disabled) {
    background-color: var(--secondary-dark);
    box-shadow: var(--elevation-2);
}

.btn--outlined {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn--outlined:hover:not(:disabled) {
    background-color: var(--primary);
    color: var(--on-primary);
}

.btn--text {
    background-color: transparent;
    color: var(--primary);
    padding: var(--space-2) var(--space-4);
}

.btn--text:hover:not(:disabled) {
    background-color: rgba(25, 118, 210, 0.08);
}

/* Button Sizes */
.btn--small {
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
}

.btn--large {
    padding: var(--space-4) var(--space-8);
    font-size: var(--text-base);
}

/* Card Component */
.card {
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-1);
    overflow: hidden;
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--elevation-2);
}

.card__header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--outline-variant);
}

.card__title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--on-surface);
    margin-bottom: var(--space-1);
}

.card__subtitle {
    font-size: var(--text-sm);
    color: var(--on-surface-variant);
}

.card__content {
    padding: var(--space-6);
}

.card__actions {
    padding: var(--space-4) var(--space-6);
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    border-top: 1px solid var(--outline-variant);
}

/* Header Component */
.header {
    background-color: var(--surface);
    border-bottom: 1px solid var(--outline-variant);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.header__logo {
    flex-shrink: 0;
}

.header__nav {
    display: none;
}

.header__auth,
.header__user {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

@media (min-width: 768px) {
    .header__nav {
        display: block;
        margin-left: var(--space-8);
    }

    .mobile-menu-btn {
        display: none;
    }
}

/* Navigation */
.nav-list {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-6);
}

.nav-link {
    color: var(--on-surface-variant);
    font-weight: var(--font-medium);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.nav-link:hover {
    color: var(--primary);
    background-color: rgba(25, 118, 210, 0.08);
    text-decoration: none;
}

.nav-link--active {
    color: var(--primary);
    background-color: rgba(25, 118, 210, 0.12);
}

/* Mobile Navigation */
.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    color: var(--on-surface-variant);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.mobile-menu-btn:hover {
    background-color: rgba(66, 66, 66, 0.08);
}

.mobile-nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--surface);
    border-top: 1px solid var(--outline-variant);
    box-shadow: var(--elevation-2);
}

.mobile-nav.active {
    display: block;
}

.mobile-nav__list {
    list-style: none;
    margin: 0;
    padding: var(--space-4) 0;
}

.mobile-nav__link {
    display: block;
    padding: var(--space-3) var(--space-6);
    color: var(--on-surface);
    text-decoration: none;
    transition: background-color var(--transition-fast);
}

.mobile-nav__link:hover {
    background-color: rgba(66, 66, 66, 0.04);
    text-decoration: none;
}

.mobile-nav__link--primary {
    color: var(--primary);
    font-weight: var(--font-medium);
}

.mobile-nav__divider {
    height: 1px;
    background-color: var(--outline-variant);
    margin: var(--space-2) var(--space-6);
}

.mobile-nav__credits {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6);
    color: var(--on-surface-variant);
    font-size: var(--text-sm);
}

/* Credit Display */
.credit-display {
    display: none;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-4);
    background-color: var(--surface-variant);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
}

.credit-display__icon {
    font-size: var(--text-lg);
    color: var(--primary);
}

.credit-display__amount {
    font-weight: var(--font-semibold);
    color: var(--on-surface);
}

.credit-display__label {
    color: var(--on-surface-variant);
}

@media (min-width: 768px) {
    .credit-display {
        display: flex;
    }
}

/* User Dropdown */
.user-dropdown {
    position: relative;
}

.user-dropdown__trigger {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2);
    border: none;
    background: transparent;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.user-dropdown__trigger:hover {
    background-color: rgba(66, 66, 66, 0.04);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: var(--radius-full);
    background-color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--on-primary);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
}

.user-dropdown__name {
    display: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--on-surface);
}

.user-dropdown__icon {
    font-size: var(--text-lg);
    color: var(--on-surface-variant);
    transition: transform var(--transition-fast);
}

.user-dropdown__trigger[aria-expanded="true"] .user-dropdown__icon {
    transform: rotate(180deg);
}

@media (min-width: 768px) {
    .user-dropdown__name {
        display: block;
    }
}

.user-dropdown__menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    min-width: 200px;
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-3);
    padding: var(--space-2) 0;
    z-index: 1000;
}

.user-dropdown__menu.active {
    display: block;
}

.user-dropdown__item {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-4);
    color: var(--on-surface);
    text-decoration: none;
    font-size: var(--text-sm);
    transition: background-color var(--transition-fast);
}

.user-dropdown__item:hover {
    background-color: rgba(66, 66, 66, 0.04);
    text-decoration: none;
}

.user-dropdown__item .material-icons {
    font-size: var(--text-lg);
    color: var(--on-surface-variant);
}

.user-dropdown__divider {
    height: 1px;
    background-color: var(--outline-variant);
    margin: var(--space-2) 0;
}

/* Footer */
.footer {
    background-color: var(--surface);
    border-top: 1px solid var(--outline-variant);
    padding: var(--space-16) 0 var(--space-8);
    margin-top: var(--space-20);
}

.footer--minimal {
    padding: var(--space-6) 0;
    margin-top: var(--space-12);
}

.footer__content {
    display: grid;
    gap: var(--space-8);
    grid-template-columns: 1fr;
}

@media (min-width: 768px) {
    .footer__content {
        grid-template-columns: 1fr 2fr;
        gap: var(--space-12);
    }
}

.footer__brand {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.footer__description {
    color: var(--on-surface-variant);
    margin-bottom: 0;
}

.footer__links {
    display: grid;
    gap: var(--space-8);
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
}

.footer__column {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.footer__title {
    font-size: var(--text-sm);
    font-weight: var(--font-semibold);
    color: var(--on-surface);
    margin-bottom: var(--space-1);
}

.footer__list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.footer__list a {
    color: var(--on-surface-variant);
    font-size: var(--text-sm);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer__list a:hover {
    color: var(--primary);
    text-decoration: none;
}

.footer__bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--space-8);
    border-top: 1px solid var(--outline-variant);
    margin-top: var(--space-8);
}

.footer__copyright {
    font-size: var(--text-sm);
    color: var(--on-surface-variant);
    margin-bottom: 0;
}

.footer__social {
    display: flex;
    gap: var(--space-2);
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    color: var(--on-surface-variant);
    transition: all var(--transition-fast);
}

.footer__social-link:hover {
    background-color: rgba(66, 66, 66, 0.04);
    color: var(--primary);
    text-decoration: none;
}

.footer--minimal .footer__content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer--minimal .footer__links {
    display: flex;
    gap: var(--space-6);
}

.footer--minimal .footer__links a {
    font-size: var(--text-sm);
    color: var(--on-surface-variant);
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: var(--space-6);
    right: var(--space-6);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-4);
    background-color: var(--surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--elevation-3);
    min-width: 300px;
    animation: toastIn var(--transition-normal) ease-out;
}

.toast--success {
    border-left: 4px solid var(--success);
}

.toast--error {
    border-left: 4px solid var(--error);
}

.toast--warning {
    border-left: 4px solid var(--warning);
}

.toast--info {
    border-left: 4px solid var(--info);
}

.toast__icon {
    flex-shrink: 0;
}

.toast--success .toast__icon { color: var(--success); }
.toast--error .toast__icon { color: var(--error); }
.toast--warning .toast__icon { color: var(--warning); }
.toast--info .toast__icon { color: var(--info); }

.toast__message {
    flex: 1;
    font-size: var(--text-sm);
    color: var(--on-surface);
}

.toast__close {
    flex-shrink: 0;
    background: none;
    border: none;
    color: var(--on-surface-variant);
    cursor: pointer;
    padding: var(--space-1);
    border-radius: var(--radius-sm);
    transition: background-color var(--transition-fast);
}

.toast__close:hover {
    background-color: rgba(66, 66, 66, 0.04);
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@media (max-width: 640px) {
    .toast-container {
        top: var(--space-4);
        right: var(--space-4);
        left: var(--space-4);
    }

    .toast {
        min-width: auto;
    }
}